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The area of the remaining sheet = π(R²-r²)
where R is the radius of big circle and R is radius of small circle
π(4²-3²)=3.14(16-9)=3.14*7=21.98 cm²
BUT if you take π = 22/7 then the answer will be exactly 22 cm².
HOPE IT HELPS!!
where R is the radius of big circle and R is radius of small circle
π(4²-3²)=3.14(16-9)=3.14*7=21.98 cm²
BUT if you take π = 22/7 then the answer will be exactly 22 cm².
HOPE IT HELPS!!
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